G. Schmidt – författare

This book expounds the theory of non-linear vibrations, a topic of great interest at present because of its many applications to important fields in physics and engineering. After introducing chapters giving the basic techniques for the study of non-linear systems the authors develop in detail the theory of selected topics encountered in their own work, presenting original material, approaches and results of analysis, and providing illustrations of useful applications.

NATO - The First 50 Years offers the first comprehensive study of the institution's activities and development over the past five decades. It also addresses the perennial problems of transatlantic relationships, the problems that the Alliance grapples with today.

The fields of control and robotics are now at an advanced level of maturity both in theory and practice. Numerous systems are used effectively in industrial production and other sectors of modern life. This volume contains a well-balanced collection of over fifty papers focusing on analysis and design problems. The current trends and advances in the fields are reflected. Topics covered include: system analysis, identification and stability optimal, adaptive, robust and QFT controller design design and application of driving simulators industrial robots and telemanipulators mobile, service, and legged robots virtual reality in robotics The book brings together important original results derived from a variety of academic and engineering environments. Also, it serves as a timely reference volume for the researcher and practitioner.

No detailed description available for "Vol 66, Nr 1".

No detailed description available for "Non-Linear Vibrations".

From October 1964 to May 1969 the 40 MHz, 41 MHz, and 360 MHz signals of the satellite Explo­ 0 0 rer 22, were recorded at Lindau (51,650 N; 10,125 E). The Faraday effect recordings at 40 MHz and 41 MHz and Dispersive-Doppler-effect recordings at 40 MHz and 360 MHz were used to calculate the ionospheric electron content up to 1000 km. The mean electron content for 1 hour periods over a period 0 of three months as obtained at 51. 6 N geographic latitude as derived from various evaluation methods is presented. Furthermore, the relevant critical frequency FOF2 is displayed. A similar presentation was chosen for the calculated slabthickness data. For one specific case the daily variation of the electron con­ tent as determined by measurements was compared with a relevant theoretical curve. The agreement, was fairly good. Due to technical problems the beacons were switched off in 1969. Now the five orbiting FS-NNSS satellites provide a good possibility to determine the ionospheric electron content up to 1100 km fairly accurately by evaluating the Dispersive Doppler recordings obtained at 150 MHz and 400 MHz. The amplitude recordings of the 40 MHz and 41 MHz signals of Explorer 22 were furthermore used for amplitude scintillation studies. Simultaneous Dispersive-Doppler-recordings enabled in part also pha­ se scintillation studies. Phase and amplitude recordings were compared.

Die Fachtagung PROZESSRECHNER 1977 setzt eine im Jahre 1974 in Karls- ruhe begonnene, wissenschaftliche Veranstaltungsreihe fort, die sich mit grundlegenden Fragen der ProzeBrechnertechnik, ihrem heutigenStand und ihrer Weiterentwicklung befaBt. Auch die zweite Fachtagung wurde wieder gemeinsam von der Gesellschaft fur Informatik, der Gesellschaft fur Kernforschung und der bei dieser Gelegenheit federfuhrenden VDI/VDE- Gesellschaft MeB- und Regelungstechnik ausgerichtet. In einer vorbereitenden Sitzung erzielte das Programmkomitee Uberein- stimmung daruber, das Tagungsprogramm bevorzugt auf die fur den ratio- nellen Einsatz der ProzeBrechner bedeutsamen Fragen der Software aus- zurichten. Bevorzugt behandelt werden solI ten fortschrittliche Metho- den zu Software-Produktion und -Betrieb, sowohl aus der Sicht des An- wenders wie des Systemherstellers. Dazu sollten auch Fragen der Wirt- schaftlichkeit und Standardisierung von Software einbezogen werden. Ferner erschien es wunschenswert, zu Beitragen aufzurufen, die uber neue Entwicklungen der Hardware und deren Einwirkung auf Systemstruk- tur und Software berichten.Die Resonanz, die der Aufruf zur Vortragsanmeldung bei Ingenieuren und Wissenschaftlern der anwendenden und herstellenden Industrie sowie der verschiedenen Forschungsinstitutionen fand, laBt sich aus dem vorlie- genden, umfangreichen Tagungsband ablesen. Er umfaBt neben den vier Hauptvortragen die 37, in sieben Themengruppen gegliederten Fachvor- trage der Veranstaltung. Wahrend die Hauptvortrage einen weitgespann- ten Uberblick auf die verschiedensten Aspekte der ProzeBrechnertechnik und ihrer Anwendung geben, zeichnen sich die uberwiegend praxisnahen Fachvortrage durch die Diskussion interessanter und neuartiger Losun- gen oder Losungsansatze fur die mannigfaltigen Probleme der ProzeB- rechner-Software undihrerRandgebiete aus.